Yeah if what you got is working good, no point in changing it. I think those pre-filled cartridges have come a long long way too. They used to be kind of janky, but now its standard for them to actually use pretty good co2 extract in there and the coils don't pop on you barely into a cartridge like they used to. I know ABC has been using those pre-fills and likes them. I've been meaning to grab some but i'm such a cheap ass and ive already got the vape mod and the batteries and charger etc so its easy for me to lean towards just grabbing the extracts and use my own attachments to save that bit of money. They still want like $30-40 for a half-gram cartridge up here and you can get some great extracts for like $25 a gram